[alt-photo] Re: Alternative sensitiser

[Michel Debar]

About Kosar / Ulano :

New York Times, (Jan 5th, 1967) :
JAROMIR KOSAR
January 5, 1967, Thursday
(Page 35, 102 words)
Jaromir Kosar, a graphic arts scientist and director of research and
development for the Ulano Companies of Brooklyn, suppliers to the graphic
arts, died yesterday at his home, 157-12 Powell's Cove Boulevard, Beechurst,
Queens. He was 42 years old.

2010/4/18 Kees Brandenburg <workshops at polychrome.nl>

>
> Hi Peter,
>
> > I use this type of gelatin as I would gum but usually I use a 20% wt in
> solution versus the traditional 30-40% for gum.
>
> And how did you modify or hydrolize the gelatin to keep it liquid? Do you
> use warm water to develop the gelatin print?
>
> > I did come across the Ulano name as well under Bernard Ulano of
> Diagravure film -not sure if this is related to the Ulano that you mention.
> Re patents, yes many do not work. I have found this out on numerous
> occasions.
>
>
> Bernard Ulano was the one who filed the patent with the combination of a
> simple and complex ferric salt. Diagravure was, as far as I could find a
> subdivision of Ulano. About Bernard I could not find anything photo related.
> The patent is here:
>
>
> http://www.google.nl/patents?id=ii4CAAAAEBAJ&zoom=4&dq=RELIEF%20%20IMAGE%20PROCESS%20UTILIZING%20A%20SIMPLE&pg=PA74#v=onepage&q&f=false
> It worked, but was very unpractical because of the immediate hardening if
> the ferric mix was not consistent. The sensitivity gain was nonexistent or
> very low. So I decided to stay with the Ferric Ammonium salt.
>
> When I mailed about this with Halvor some time ago he found another patent
> for the Diagravure Film Mnf. Corp. filed by Kosar (!) himself. So they
> probably knew each other.
>
>
> -k
>
>
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>



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Michel Debar
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